78821780

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{461}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 169513344

約数和(自身を除く): 90691564

約数列:

[1, 2, 4, 5, 10, 20, 83, 103, 166, 206, 332, 412, 415, 461, 515, 830, 922, 1030, 1660, 1844, 2060, 2305, 4610, 8549, 9220, 17098, 34196, 38263, 42745, 47483, 76526, 85490, 94966, 153052, 170980, 189932, 191315, 237415, 382630, 474830, 765260, 949660, 3941089, 7882178, 15764356, 19705445, 39410890, 78821780]

約数ペア:

[(1, 78821780), (2, 39410890), (4, 19705445), (5, 15764356), (10, 7882178), (20, 3941089), (83, 949660), (103, 765260), (166, 474830), (206, 382630), (332, 237415), (412, 191315), (415, 189932), (461, 170980), (515, 153052), (830, 94966), (922, 85490), (1030, 76526), (1660, 47483), (1844, 42745), (2060, 38263), (2305, 34196), (4610, 17098), (8549, 9220)]